EV2351DQ-00A – 4.75V TO 23V INPUT, 1.5A OUTPUT STEP-DOWN CONVERTER

EVALUATION BOARD - INITIAL RELEASE

NOTICE:

The information in this document is subject to change without notice. Please contact MPS for current specifications.

Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS

products into any application. MPS will not assume any legal responsibility for any said applications.

EV2351DQ-00A Rev. 1.1

www.MonolithicPower.com

3

3/29/2005

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2005 MPS. All Rights Reserved.

PRINTED CIRCUIT BOARD LAYOUT

Figure 1—Top Silk Layer

Figure 2—Top Layer

Figure 3—Bottom Layer

QUICK START GUIDE

1. Connect the positive terminal of the load to VOUT pins, and the negative terminal of the load to

GND pins

2. Preset the power supply output to 4.75V – 23V and turn off the power supply.

3. Connect the positive terminal of the power supply output to the VIN pin and the negative

terminal of the power supply output to the GND pin

4. Turn the power supply on. The MP2351 will automatically startup.

5. To use the Enable function, apply a digital input to EN pin. Drive EN higher than 2.5V to turn on

the regulator, drive EN less than 0.7V to turn it off.

6. An input under voltage lockout (UVLO) function can be implemented by the addition of a resistor

divider R4 and R5.

V

5

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2

5

R

4

R

1

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